Dimitar Berbatov's future at Fulham is in doubt.

The People says Berbatov is said to be frustrated at the club's refusal to strengthen their squad significantly. Berbatov also has another year on his deal but Tottenham, Fiorentina and Juventus wanted the 32-year-old striker last summer and, after a 13-goal Premier League campaign, the brilliant Bulgarian is sure to attract further interest.